Fix strtod handling of underflow (bug 14047).

1 files changed, 33 insertions, 0 deletions

diff --git a/sysdeps/generic/tininess.h b/sysdeps/generic/tininess.h
new file mode 100644
index 0000000000..fd01739950
--- /dev/null
+++ b/sysdeps/generic/tininess.h
@@ -0,0 +1,33 @@
+/* Specify architecture-specific rules for determining tininess of
+   floating-point results.  Generic version.
+   Copyright (C) 2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _TININESS_H
+#define _TININESS_H	1
+
+/* Under IEEE 754, an architecture may determine tininess of
+   floating-point results either "before rounding" or "after
+   rounding", but must do so in the same way for all operations
+   returning binary results.  Define TININESS_AFTER_ROUNDING to 1 for
+   "after rounding" architectures, 0 for "before rounding"
+   architectures.  The test stdlib/tst-tininess will fail if the
+   definition is incorrect.  */
+
+#define TININESS_AFTER_ROUNDING	0
+
+#endif /* tininess.h */